All medalists.
IMO & IOI, including honourable mentions.
DKDonghyun KimRepublic of KoreaIMO2026Competition recordSilver medalIndexed profileDKDonghyun KimRepublic of KoreaIMO2020 · 2022Competition recordBronze medal · Silver medalDJDong Jin LeeRepublic of KoreaIOI2001AppleEngineering ManagerIndexed profileĐNĐỗ Ngọc MinhVietnamIMO1991Competition recordSilver medalDRDong Ryul KimRepublic of KoreaIMO2012 · 2013 · 2014Samsung ElectronicsSenior EngineerIndexed profileDSDong ShinUnited States of AmericaIMO2001Competition recordSilver medalDUDong Uk (David) RheeCanadaIMO2004 · 2005 · 2006Competition recordHonourable mention · Bronze medal · Silver medalDVDong Vu ToVietnamIMO1994Competition recordSilver medalDWDong WangChinaIOI2006atombite.aiChief Executive OfficerIndexed profileDWDongyi WeiChinaIMO2008 · 2009Competition recordGold medal
Dong ZhouChinaIOI2008Competition recordGold medalAutumn profileDMDoniyorbek MatyakubovUzbekistanIMO2017Competition recordHonourable mentionDIDoniyor IsmoilovUzbekistanIMO2021WebaseMiddle Backend DeveloperIndexed profileDNDoniyor NafasovUzbekistanIMO2003Competition recordSilver medalIndexed profileDYDoniyor YazdonovUzbekistanIMO2017Competition recordHonourable mentionIndexed profileDCDonny CheungCanadaIMO1995Verily HealthDirector, AI and Data ScienceIndexed profileDCDonny CheungCanadaIOI1996Verily HealthDirector, AI and Data ScienceIndexed profileDCDooho ChangRepublic of KoreaIOI2010PortOne KoreaIndexed profileDSDoo Sung ParkRepublic of KoreaIMO2004 · 2005Competition recordSilver medal · Gold medalĐQĐỗ Quang ĐạiVietnamIMO1984Competition recordSilver medalDTDora TilliArgentinaIMO1994University of Buenos AiresDocente en el Ciclo Básico ComúnIndexed profileĐBĐorđe BaralićSerbia and MontenegroIMO2004Competition recordBronze medalĐKĐorđe KrtinićYugoslaviaIMO1995Faculty of Mathematics, University of BelgradeProfessorIndexed profileĐMĐorđe MilićevićYugoslaviaIMO1995 · 1996Competition recordSilver medalIndexed profile
Dorian CroitoruRepublic of MoldovaIMO1998 · 2000 · 2001WorldQuantVice President, Portfolio ManagementAutumn profile
Dorian DobrinRomaniaIMO2000OptiverResearcher - Options PricingAutumn profileDLDorijan LendvajCroatiaIOI2019 · 2020 · 2021 · 2022Competition recordBronze medal · Silver medal · Gold medalIndexed profileDLDorijan LendvajCroatiaIMO2021 · 2022Competition recordBronze medal · Honourable mentionIndexed profileDGDorin GrecuRepublic of MoldovaIMO1995 · 1996The International School YangonSecondary Science and Mathematics TeacherIndexed profileDNDorin N. D. BucurRomaniaIMO1986Competition recordBronze medalDODoris ObermaierAustriaIMO2020 · 2021 · 2022Santander Consumer Bank ÖsterreichDirector Compliance & AMLIndexed profileDKDoriush KhayridinovTajikistanIMO2022Competition recordHonourable mentionDCDorjnamjil ChandmaniMongoliaIOI2005ExaWizards Inc.Indexed profileDEDorjpalamyin EnkhbayarMongoliaIMO1992Competition recordHonourable mentionDBDorjsuren BaramsaiMongoliaIMO1990Competition recordHonourable mentionDMDor MezerIsraelIMO2014 · 2015 · 2016 · 2017Competition recordBronze medal · Silver medalDPDoron PuderIsraelIMO1997 · 1998Competition recordBronze medalAutumn profileDSDoron ShafrirIsraelIMO2001 · 2002Competition recordBronze medal · Silver medalDSDor ShmoishIsraelIMO2014 · 2015FinalQuantitative ResearcherAutumn profileDSDoruntina SylejmaniKosovoIMO2015 · 2016LSN+PartnersArchitectIndexed profileDZDoslan ZheksheevKyrgyzstanIMO2016 · 2017 · 2018The State Institution "Kyzmat" (former SE Infocom)Software EngineerIndexed profileDRDostonbek RakhmonkulovUzbekistanIMO2026Competition recordSilver medalĐTĐỗ Thị Thu ThảoVietnamIMO2008Competition recordSilver medalDCDouglas Curbelo AguileraCubaIMO2007Magic LeapIndexed profileDDDouglas DavidsonUnited States of AmericaIMO1984Competition recordBronze medalDFDouglas Frederick EastonUnited KingdomIMO1976Competition recordSilver medalDJDouglas JungreisUnited States of AmericaIMO1982 · 1983Competition recordBronze medal · Silver medalDODouglas OmanUnited States of AmericaIMO1974Competition recordBronze medalDODovlet OvlyagulyyevTurkmenistanIMO2013 · 2015Weave Services LimitedConsultantIndexed profileDVDovydas VadišiusLithuaniaIOI2020 · 2021CSEMIntern in Agentic AIIndexed profileDVDovydas VadišiusLithuaniaIMO2020CSEMIntern in Agentic AIIndexed profileDPDragomir PeykovBulgariaIMO1986 · 1987Buldecor LTDExport ManagerIndexed profileDIDragoş-Ciprian IonescuRomaniaIMO2007Competition recordSilver medalDGDragos GhiocaRomaniaIMO1994 · 1995 · 1996Competition recordSilver medalDGDragoş GîlcăRepublic of MoldovaIMO2008 · 2009FacebookSenior Machine Learning EngineerIndexed profileDIDragoş IftimieRomaniaIMO1990Competition recordSilver medalDMDragoş-Ioan MichneaRomaniaIMO2005 · 2006Cubist Systematic StrategiesSenior Research AnalystAutumn profileDODragos-Nicola OpreaRomaniaIMO1993 · 1994 · 1995Competition recordBronze medal · Silver medal · Gold medalDPDragoş PopescuRomaniaIMO1970Competition recordBronze medalDPDragoș PortRepublic of MoldovaIMO2022 · 2023Competition recordBronze medal
Dong ZhouChinaIOI2008Competition recordGold medalAutumn profileDMDoniyorbek MatyakubovUzbekistanIMO2017Competition recordHonourable mentionDIDoniyor IsmoilovUzbekistanIMO2021WebaseMiddle Backend DeveloperIndexed profileDNDoniyor NafasovUzbekistanIMO2003Competition recordSilver medalIndexed profileDYDoniyor YazdonovUzbekistanIMO2017Competition recordHonourable mentionIndexed profileDCDonny CheungCanadaIMO1995Verily HealthDirector, AI and Data ScienceIndexed profileDCDonny CheungCanadaIOI1996Verily HealthDirector, AI and Data ScienceIndexed profileDCDooho ChangRepublic of KoreaIOI2010PortOne KoreaIndexed profileDSDoo Sung ParkRepublic of KoreaIMO2004 · 2005Competition recordSilver medal · Gold medalĐQĐỗ Quang ĐạiVietnamIMO1984Competition recordSilver medalDTDora TilliArgentinaIMO1994University of Buenos AiresDocente en el Ciclo Básico ComúnIndexed profileĐBĐorđe BaralićSerbia and MontenegroIMO2004Competition recordBronze medalĐKĐorđe KrtinićYugoslaviaIMO1995Faculty of Mathematics, University of BelgradeProfessorIndexed profileĐMĐorđe MilićevićYugoslaviaIMO1995 · 1996Competition recordSilver medalIndexed profileDorian CroitoruRepublic of MoldovaIMO1998 · 2000 · 2001WorldQuantVice President, Portfolio ManagementAutumn profileDorian DobrinRomaniaIMO2000OptiverResearcher - Options PricingAutumn profileDLDorijan LendvajCroatiaIOI2019 · 2020 · 2021 · 2022Competition recordBronze medal · Silver medal · Gold medalIndexed profileDLDorijan LendvajCroatiaIMO2021 · 2022Competition recordBronze medal · Honourable mentionIndexed profileDGDorin GrecuRepublic of MoldovaIMO1995 · 1996The International School YangonSecondary Science and Mathematics TeacherIndexed profileDNDorin N. D. BucurRomaniaIMO1986Competition recordBronze medalDODoris ObermaierAustriaIMO2020 · 2021 · 2022Santander Consumer Bank ÖsterreichDirector Compliance & AMLIndexed profileDKDoriush KhayridinovTajikistanIMO2022Competition recordHonourable mentionDCDorjnamjil ChandmaniMongoliaIOI2005ExaWizards Inc.Indexed profileDEDorjpalamyin EnkhbayarMongoliaIMO1992Competition recordHonourable mentionDBDorjsuren BaramsaiMongoliaIMO1990Competition recordHonourable mentionDMDor MezerIsraelIMO2014 · 2015 · 2016 · 2017Competition recordBronze medal · Silver medalDPDoron PuderIsraelIMO1997 · 1998Competition recordBronze medalAutumn profileDSDoron ShafrirIsraelIMO2001 · 2002Competition recordBronze medal · Silver medalDSDor ShmoishIsraelIMO2014 · 2015FinalQuantitative ResearcherAutumn profileDSDoruntina SylejmaniKosovoIMO2015 · 2016LSN+PartnersArchitectIndexed profileDZDoslan ZheksheevKyrgyzstanIMO2016 · 2017 · 2018The State Institution "Kyzmat" (former SE Infocom)Software EngineerIndexed profileDRDostonbek RakhmonkulovUzbekistanIMO2026Competition recordSilver medalĐTĐỗ Thị Thu ThảoVietnamIMO2008Competition recordSilver medalDCDouglas Curbelo AguileraCubaIMO2007Magic LeapIndexed profileDDDouglas DavidsonUnited States of AmericaIMO1984Competition recordBronze medalDFDouglas Frederick EastonUnited KingdomIMO1976Competition recordSilver medalDJDouglas JungreisUnited States of AmericaIMO1982 · 1983Competition recordBronze medal · Silver medalDODouglas OmanUnited States of AmericaIMO1974Competition recordBronze medalDODovlet OvlyagulyyevTurkmenistanIMO2013 · 2015Weave Services LimitedConsultantIndexed profileDVDovydas VadišiusLithuaniaIOI2020 · 2021CSEMIntern in Agentic AIIndexed profileDVDovydas VadišiusLithuaniaIMO2020CSEMIntern in Agentic AIIndexed profileDPDragomir PeykovBulgariaIMO1986 · 1987Buldecor LTDExport ManagerIndexed profileDIDragoş-Ciprian IonescuRomaniaIMO2007Competition recordSilver medalDGDragos GhiocaRomaniaIMO1994 · 1995 · 1996Competition recordSilver medalDGDragoş GîlcăRepublic of MoldovaIMO2008 · 2009FacebookSenior Machine Learning EngineerIndexed profileDIDragoş IftimieRomaniaIMO1990Competition recordSilver medalDMDragoş-Ioan MichneaRomaniaIMO2005 · 2006Cubist Systematic StrategiesSenior Research AnalystAutumn profileDODragos-Nicola OpreaRomaniaIMO1993 · 1994 · 1995Competition recordBronze medal · Silver medal · Gold medalDPDragoş PopescuRomaniaIMO1970Competition recordBronze medalDPDragoș PortRepublic of MoldovaIMO2022 · 2023Competition recordBronze medal